Q1 2026 Estimated Tax Deadline: April 15, 2026
When it's due, what it covers, how to pay, and what happens if you're late.
By the Easy Guides Editorial Team
The Q1 2026 estimated tax payment is due April 15, 2026. It covers income you earned January 1, March 31, 2026. Pay online through IRS Direct Pay or EFTPS, and if you've already paid enough to hit the safe harbor, you may owe nothing this quarter.
When is the Q1 2026 estimated tax deadline?
The Q1 2026 estimated tax payment is due April 15, 2026. Here's the full 2026 schedule so you can see where it fits:
| Payment | Due date | Income earned |
|---|---|---|
| Q1 2026 | April 15, 2026 | January 1, March 31, 2026 |
| Q2 2026 | June 15, 2026 | April 1, May 31, 2026 |
| Q3 2026 | September 15, 2026 | June 1, August 31, 2026 |
| Q4 2026 | January 15, 2027 | September 1, December 31, 2026 |
What income does the Q1 payment cover?
Estimated tax is a “pay as you go” system, so this payment is for the income you earned January 1, March 31, 2026. If your income is uneven across the year, you can pay based on what you actually made each quarter (the annualized-income method) rather than in four equal amounts.
How much to pay, and how to pay it
The simplest way to avoid a penalty is the safe-harbor rule: pay in at least 100% of last year's tax (110% if you're a higher earner), spread across the four quarters, and you're covered no matter what you end up owing. Pay online in minutes with IRS Direct Pay (from a bank account, no fee) or EFTPS. Our safe-harbor calculator works out the per-quarter amount.
What if you miss the Q1 deadline?
Don't panic and don't skip the quarter. The underpayment penalty is essentially daily interest, so paying a few days late costs very little; the mistake is not paying at all and letting it compound across the remaining quarters. Hitting the safe harbour for the year, 90% of this year's tax or 100% of last year's, rising to 110% if your prior-year AGI topped $150,000, removes the penalty even when 1 quarter was late. Pay as soon as you can and see our missed-payment guide and penalty guide.
Common questions
When is the Q1 2026 estimated tax payment due?
April 15, 2026. If that date ever falls on a weekend or federal holiday, the deadline moves to the next business day, but for 2026 it lands on a weekday, so April 15, 2026 is the date.
What income does the Q1 payment cover?
Income you earned January 1, March 31, 2026. Estimated taxes are 'pay as you go,' so each payment covers the money you made during that specific stretch of the year.
What if I miss the deadline?
Pay as soon as you can, the underpayment penalty is really just interest that accrues daily, so a payment a few days late costs very little. Don't skip the quarter waiting for the next one. See our missed-payment guide.